Kailkoad-gate



D. PERCIVAL. Railroad Gate N.0.- 4,435. Patented April 4,1846,

UNITED STATES PATENT OFFICE.

DAVID PERCIVAL, OF MIDDLETOWN, DELAWARE.

RAILROAD-GATE.

Specification of Letters Patent No. 4,435, dated April 4, 1846.

T 0 all whom it may concern Be it known that 1, DAVID PERGIVAL, ofMiddletown, in the county of Newcastle and State of Delaware, haveinvented a new and improved Railroad-Gate; and I do hereby declare thefollowing to be a full and exact description of the same, referencebeing had to the accompanying drawing, making a part of thisspecification.

The nature of my invention consists in suspending a gate across a railroad track, Working in grooves in a couple of vertical posts secured oneach side of the same; the rails for a suitable distance on each side ofthe gate, are secured to strong beams; one end of these beams are hingedto the permanent portion of the track, the other or inner ends rest iniron chairs secured to the top of the gate, the ends of the beams on theright and left of the gate being opposite each other in the same chairs.There is suflicient weight suspended to ropes attached to each side ofthe gate and passing over pulleys on the top of the side posts, to raisethe gate and the ends of the beams resting upon the same to the fullheight of the gate. When the locomotive and train come on to theinclined beams resting upon the gate, their weight presses down thegate, and brings the beams to their permanent bearings, as soon as thetrain has passed over the gate and the vibrating beams, the gate risesto its proper height raising the ends of the vibrating beams restingupon the same.

A, is the balance gate.

B, B, are the side posts, in which the gate is secured in grooves ontheir inner sides;

.the side posts should descend as far below the rail road track, as theyrise above it, for the purpose of allowing for the depression of thegate so as to bring the vibrating beams C, G, into their bearings on alevel with the main track on each side of the same.

D, D, are cross beams connecting the inner ends of the vibrating beams.

E, E, are beams to which the rails of the main portion of the track aresecured.

F, F, are the iron chairs upon the top of the gate, the grooves in whichdescend each way 'from their centers; in these grooves, the ends of thevibrating beams rest; when the gate is pressed down, so as to bring thebeams into their bearings, their ends are brought together in the centerof the chairs.

G, G, are pulleys on the top of the side posts B, B.

h, h, are the ropes attached to each upper corner of the gate, passingin a groove around the pulleys.

I, is the weight attached to one of the ropes h, for raising the gate.

The side posts B, B, should be a sufiicient I distance apart to allow ofany width of cars to pass through, and in cold climates should becovered in, including the vibrating beams, to prevent the injuriouseffects of rain, snow and frost upon the same.

What I claim as new and desire to secure by Letters Patent, is-

The combination of a balance gate with a rail-road track, by means ofthe vibrating beams, combined constructed and operating with the same,substantially in the manner and for the purpose herein set forth.

DAVID PERCIVAL.

Witnesses:

Z. O. ROBBINS, T. C. DONN.

